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"Which allergies can your kids outgrow? Is there any such thing as a cat or dog that will not cause allergic reactions in sensitive people? Learn the answers to these questions and more fascinating facts about five common household allergens."^^<http://www.w3.org/2001/XMLSchema#string>
<http://health.howstuffworks.com/diseases-conditions/allergies/indoor-allergies/5-common-household-allergens-facts2.htm>